--- /dev/null
+/*******************************************************************************
+ *
+ * HAL_TLV.c
+ * Provides Functions to Read the TLV Data Section of the MSP430 Devices
+ *
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * Neither the name of Texas Instruments Incorporated nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Updated: Version 2.0 01/17/2011
+ *
+ ******************************************************************************/
+
+#include "msp430.h"
+#include "HAL_TLV.h"
+
+void Get_TLV_Info(unsigned char tag, unsigned char instance, unsigned char *length, unsigned int **data_address)
+{
+ char *TLV_address = (char *)TLV_START; // TLV Structure Start Address
+
+ while((TLV_address < (char *)TLV_END)
+ && ((*TLV_address != tag) || instance) // check for tag and instance
+ && (*TLV_address != TLV_TAGEND)) // do range check first
+ {
+ if (*TLV_address == tag) instance--; // repeat till requested instance is reached
+ TLV_address += *(TLV_address + 1) + 2; // add (Current TAG address + LENGTH) + 2
+ }
+
+ if (*TLV_address == tag) // Check if Tag match happened..
+ {
+ *length = *(TLV_address + 1); // Return length = Address + 1
+ *data_address = (unsigned int *)(TLV_address + 2); // Return address of first data/value info = Address + 2
+ }
+ else // If there was no tag match and the end of TLV structure was reached..
+ {
+ *length = 0; // Return 0 for TAG not found
+ *data_address = 0; // Return 0 for TAG not found
+ }
+}
+
+unsigned int Get_Device_Type(void)
+{
+ unsigned int *pDeviceType = (unsigned int *)DEVICE_ID_0;
+ return pDeviceType[0]; // Return Value from TLV Table
+}
+
+unsigned int Get_TLV_Memory(unsigned char instance)
+{
+ unsigned char *pPDTAG;
+ unsigned char bPDTAG_bytes;
+ unsigned int count;
+
+ instance *= 2; // set tag for word access comparison
+
+ // TLV access Function Call
+ Get_TLV_Info(TLV_PDTAG, 0, &bPDTAG_bytes, (unsigned int **)&pPDTAG); // Get Peripheral data pointer
+
+ for (count = 0;count <= instance; count += 2)
+ {
+ if (pPDTAG[count] == 0) return 0; // Return 0 if end reached
+ if (count == instance) return (pPDTAG[count] | pPDTAG[count+1]<<8);
+ }
+
+ return 0; // Return 0: not found
+}
+
+unsigned int Get_TLV_Peripheral(unsigned char tag, unsigned char instance)
+{
+ unsigned char *pPDTAG;
+ unsigned char bPDTAG_bytes;
+ unsigned int count = 0;
+ unsigned int pcount = 0;
+
+ Get_TLV_Info(TLV_PDTAG, 0, &bPDTAG_bytes, (unsigned int **)&pPDTAG); // Get Peripheral data pointer
+
+ // read memory configuration from TLV to get offset for Peripherals
+ while (Get_TLV_Memory(count)) {
+ count++;
+ }
+
+ pcount = pPDTAG[count * 2 + 1]; // get number of Peripheral entries
+ count++; // inc count to first Periperal
+ pPDTAG += count*2; // adjust point to first address of Peripheral
+ count = 0; // set counter back to 0
+ pcount *= 2; // align pcount for work comparision
+
+ // TLV access Function Call
+ for (count = 0; count <= pcount; count += 2) {
+ if (pPDTAG[count+1] == tag) { // test if required Peripheral is found
+ if (instance > 0) { // test if required instance is found
+ instance--;
+ }
+ else {
+ return (pPDTAG[count] | pPDTAG[count + 1] << 8); // Return found data
+ }
+ }
+ }
+
+ return 0; // Return 0: not found
+}
+
+unsigned char Get_TLV_Interrupt(unsigned char tag)
+{
+ unsigned char *pPDTAG;
+ unsigned char bPDTAG_bytes;
+ unsigned int count = 0;
+ unsigned int pcount = 0;
+
+ Get_TLV_Info(TLV_PDTAG, 0, &bPDTAG_bytes, (unsigned int **)&pPDTAG); // Get Peripheral data pointer
+
+ // read memory configuration from TLV to get offset for Peripherals
+ while (Get_TLV_Memory(count))
+ {
+ count++;
+ }
+
+ pcount = pPDTAG[count * 2 + 1];
+ count++; // inc count to first Periperal
+ pPDTAG += (pcount + count) * 2; // adjust point to first address of Peripheral
+ count = 0; // set counter back to 0
+
+ // TLV access Function Call
+ for (count = 0; count <= tag; count += 2)
+ {
+ if (pPDTAG[count] == 0) return 0; // Return 0: not found/end of table
+ if (count == tag) return (pPDTAG[count]); // Return found data
+ }
+
+ return 0; // Return 0: not found
+}
projects / oswald.git / blobdiff